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Science Clinic => Chemistry => Topic started by: humphriesbr@me.com on Feb 15, 2020

Title: What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 ...
Post by: humphriesbr@me.com on Feb 15, 2020

Question 1

What is the pH of a solution prepared by mixing 50.00 mL of 0.10 M NH3 with 25.00 mL of 0.10 M NH4Cl? Assume that the volume of the solutions are additive and that Kb = 1.8 × 10-5 for NH3.
◦ 9.56
◦ 9.26
◦ 8.95
◦ 11.13

Question 2

What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 mL of 0.10 M methylammonium chloride, CH3NH3Cl? Assume that the volume of the solutions are additive and that Kb = 3.70 × 10-4 for methylamine.
◦ 11.78
◦ 10.87
◦ 10.27
◦ 10.57

Title: What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.00 ...
Post by: quynhmickitran on Feb 15, 2020

Answer 1

9.56

Answer 2

10.57

Title: Re: What is the pH of a solution prepared by mixing 25.00 mL of 0.10 M methylamine, CH3NH2, with 25.
Post by: Takori James on Jun 11, 2021

thanks